Yum! Brands, KFC, Pizza Hut and Taco Bell launch annual World Hunger Relief effort with global spokesperson Christina Aguilera lending her powerful voice in new PSA to benefit United Nations World Food Programme and other hunger relief agencies. Nearly 1 billion people are going hungry and Aguilera is raising awareness as global spokesperson for Yum! Brands World Hunger Relief. Visit FromHungertoHope.com to learn more. (Photo: Business Wire)